Improved universal joint



'geiten tats atent @ffice ANTON ZWI EBEL, OFv BURLINGTON, WISCONSIN.

Letters Patent No. 68,542, dated September 3, 1867.

IMPROVED UNIVERSAL JOINT.

fdl/lgs Stlgehnle nutren tn in tiges trtters ntrnt 2mb milking-tutt ettige samt.

TO ALL WHOM IT MAYOONCERN:

Be it known that I, ANTON ZWInBEL, of Burlington, in the county ofRacine, and State of Wisconsin, have invented a new and improvedUniversal Joint; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the saine, reference being had to theaccompanying drawings, forming part of this specification, in which-Figure 1 represents a'side view of niyiuniversal joint. y

Figure 2 is a vertical cross-section ofthe same, the pla-ne ofsectionbeing indicated by' the line .er a, fig. I.

Figure 3 is a longitudinal sectional view through one of the knucklesand shanks.`

Figure 4 is a cross-section of the same.

Similar' letters of reference indicate like parts.

The object of this invention is to construct a universal joint that isto be used especially on threshing machines, which is made withoutprojecting bolts er pins, and which can bc easily1 taken apart forrenewing the knuckle-pins when the same are worn out.

The invention consists in arranging long shanks for the attachment ofthe arles to the knuckles. 'Ihese knuckles are provided with woodenpins, which turn in proper bearings 1in `the ring. Said knuckles are soarranged that they can be easily removed from the ring, so that theaforesaid wooden pins may be renewed when they are worn out.

The universal joints now used are very dangerous, by reason of bolts andjoints projecting beyond the ring, and many accidents have alreadyoccurred on this account. My invention not only overcomes thisdifficulty and objection, but is furthermore so constructed that it willlastfor a very long time, as the wooden pins can be easily renewed whenworn out. i

A is the ring, which is made of cast iron or any other suitablematerial. Within the saine are arranged fouripairs of semicircularflanges, a a. and I) b, which form the bearings for the knuckles. Eachpair, a of these flanges is arranged so that the pin B of the knucklesYcan be inscrtedbetwecn them. Two pairs of these flanges are arranged oneither end of thc ring A in such a manner that the pins of the knuckleswill be held therein at right angles from each other. The woodenknuckle-pin B is secured in the end of the shank C, which is providedwith a. ring, e, at its end, for the reception of the pin B. The shank Citself'is provided with a square hole, (see figs. 3 and 4,) so that theshaft maybe easily attached thereto. From each end of the ring C,throughwhieh the pin B` passes, projects a lip, d, as shown in lig. 2.The knuckle can be secured or placed into the ring, by laying the shankupon the edge of the ring. The pin B will then pass into the spacebetween the anges a and b. But as soon as the shank is turned the lip nlwill also be brought between the flanges, and the knuckle is then rmlyheld in thc ring, and can be removed only by turning it'to one side asfar as possible, so that th'e shank rests upon the edge of the ring.

Both knuckles are arranged alike, and operate both as described. Whenthe wooden pin is used up it may be easily replaced; and the wholedevice is therefore simple, compact, and easily repaired, and its use isnot connected with any danger to the attendants of the machine.

What I claim as new, and desire to secure by Letters Patent, is

The combination of the ringl A, having semicircular flanges a I), woodenpin ]3, lips d on knuckles c, and shank C, all constructed as describedfor the purpose specified.

ANTON ZWIEBEL.

Witnesses:

FR. RaUseHLEIN, AUG. Reuse-Hmm.

